Cake support pillar



FIG. 1 is a top perspective view of a cake support pillar showing my new design;

FIG. 2 is a side elevational view thereof on an enlarged scale;

FIG. 3 is a top plan view of FIG. 2; and

FIG. 4 is a bottom plan view of FIG. 2. 

The ornamental design for a cake support pillar, as shown. 